
© The Swedish National Heritage BoardA full moon in Stockholm, Sweden in 1900. The image was made with an old photography technique called cyanotype, which tinted everything blue.
The moon will be full but small on Tuesday (Oct. 11) as Earth's rocky companion swings wide in its orbit around the planet.
October's Full Hunter Moon nearly coincides with the apogee of the moon's orbit, or the point at which the moon is farthest from Earth. That makes October's full moon appear smaller than usual, the opposite of
the "supermoon" effect that occurred in March when the moon was full during its closest approach to Earth.
The moon will be at peak fullness at 10:06 p.m. Eastern Daylight Time (2:06 a.m. Greenwich Mean Time) on Oct. 11. Shortly thereafter, at 8:00 a.m. EDT, the moon will be at its farthest point from Earth, which it reaches once a month. The moon's orbit is elliptical rather than perfectly circular, which is why the distance from Earth to the moon varies by tens of thousands of miles depending on the time of month and year. The moon's orbit is also always slightly in flux because of differing effects of the sun's gravity.
During March's "supermoon," the full moon was 221,565 miles (356,575 kilometers) away from Earth. October's full moon will be 252,546 miles (406,434 km) away.